Railway-car truck.



G. H. GILMAN.

RAILWAY UAR TRUCK.

AYPLIUATION rum) KAY 11,1914.

v 5 w. m w n M fi A R 1 E hw T mm A dw m4 n Du t a P G. 11. GILMAN. RAILWAY DAB TRUCK.

APPLIGATIQR rum an 11,1914.

.Patented Feb. 16,1915.

4 SHEETS-SHEET 2 IN g5 N TOR.

A T TQRNE Y5 WM wag M- G. H. GILMAN.

RAILWAY UAR TRUCK.

' nrmunxon nun In 11, 1914.

Patented Feb. 16, 1915.

4 SHEETS-BEBE! 3.

VEN TOR 1 A TTORNE VS} G. H. GILMAN. RAILWAY GAR TRUCK.

rum-non FILED In 11, 191a.

1,128,771. v Patented Fb.16,1915.

. 4 BKEBTB-BHBET L LV/TNESSES VE/V TOR 4 TTORNE m GEORGE H. GILMAN, OF ST. PAUL, MINNESOTA.

RAILWAY-CA5 racer Specification of Letters Patent.

Patented Feb. 16, 1915.

Application filed Kay 11, 101.4. Serial No. 837-;70.

To all whom it may concern Be it known that I, GEORGE H. GILMAN, a citizen of the United States, residing at St. Paul, in the county of Ramsey and State of Minnesota, have invented certain new and useful Improvements in Railway-Car Trucks, of which the following is a specification.

My invention relates to trucks for railway cars, particularly trucks of the six whee type used on passenger cars.

The principal objects of the invention are to do away with the use of elliptical springs, ordinarily employed in'ear trucks and with them the side bearing arches, truck bolsters and spring planks, thereby providing a less obstructed space under the truck frame for the brake rigging which may, in consequence, be simplified in itsconstruction and more easily repaired when necessary; to provide oertoinnrra-ngements of the springs whereby the car body will be more efiiciently cushioned on its running gear; to provide a truck which will be simpler in its construction, stronger and more durable than the trucks now in vuse; and furthermore, to

provide -41 construction for a railway car truck whichmvhile (i'uite different in its general organization from the trucks of standard type zmdian improvement thereon in the several respects above noted, accomplishes said improvements by means of certain parts anddev-ices which can be readily substituted forcorrespondingparts and devices in trucks of standard makes so that old equipment may be reconstructed to obtain the benefits of the invention with a minimum expenditure for ilaborond *materialf Regarded more specifically, the invention provides =inia railway car truck a cushioned or elastic center hearing arranged preferably above the truck frame on which the bolster is sustained and which takes the place of the usual structure made up of the side bearing arches, truck bolsters, spring planks and elliptical springs, these being entirelv done away with in the truck of my in ention.

The invention further provides :1 Sup porting memberofnew and improved form and construction for sustaining the center bearing on the truck frame which serves to brace and reinforce thetruck frame so as to keep the some from In addition to these eatures invention provides a novel arrangement of springs be tween the equalizer bars and the truck frame which operate, particularly in connection with the elastic center bearm of the truck, to more efiiciently absorb shocis and cushion the car body under vsryingloads than the spring arrangements of the trucks fore in use. The invention also provides a. telescoping elastic side bearing betweenthe body bolster and the truck frame whichis calculated to further carry out one of the generulpurposes of the invention, namely, to provide eilicient means-for elastically supporting the our body on the running gearso that the car will run smoothly and evenly. The gradual increase in weight of passenger cars which has been going on forsome time, has reached such a point that the spring arrangements in the trucks ofstanda-rd type ,nre not capable of absorbing the shocks to vJ-hich they are subjected, particularly when the cars carry a heavy load. Theremedy which has been tried is to inerea and sti fi en the springs but with the result that the springs are wltogethertoo stifi when-the cars carry light loads.

My invention provides is radically .difi'erent arrangement of s rings mvoleing is different organization e the other elements of the truck undby these novel, cuts and constructions, accomplishes on .j sstio or cushioning sinaport for the car body :Whlfih operates to efiectively absorb shocks and vibration with the cor either "lightly or heavily loaded.

\Vhileall of the improvements to behereinafter described :and claimed cooperate .one with another and are preferably used in combination substantially :as shown. certain advantages might be obtained iby the separate use of some of theseiniprovements in trucks of difl'eront typeiand general -;organization. e

The preferred vembodiment of the invention combining .all of its features of improvemehts isshown [in the accompanying drawings wherein i-ng out of square;

Figure l is a plan view of the truck, Fig. 2, a side elevation; rig. 'J a detail View showing the comparatire length of the equalizer springs before compression; Fig. 3, a detail plan view of one of the side bearings; Fig. l. a sectional view on line l-l of Fig. 3; Fig. 5, a view, in perspectivei of the bearing member on the truck bols er which cooperates with the yield-able bearing shown in the preceding two figures; Fig. l', a view. in perspective, of a truck frame of ordinary form which may be employed in the construction of the truck of my invention; Fig. T, a plan view, of the center bearing supporting member which serves also as a reinforcement and brace for the truck frame: Figs. 8 and 9, side views of said supporting member; Fig. 10, a cross sectional view taken on line 1U1U of Fig.

l, and Fig. ll, a plan view of a portion of the supporting member shown in detail in Figs. 7 .to 9 inclusive and of the center bear.- ing supported thereon.

Like characters of reference designate like parts in the several figures of the drawin s.

Tteferring to the drawings, 25 designates the body bolster of the car, 26 the body center plate. 27 the truck center plate, 28 the wheels, 29 the axles, 30 the axle boxes, 31 the equalizer bars which are secured to the axle boxes in the familiar manner, 32 the pedestals and 33 the pedestal tie bars, these parts all being. if desired, of familiar construction. A truck frame of common construction may also be employed, a frame of this type being shown in detail in Fig. 6 and consisting of side members or outerwheel pieces Q4. end pieces 35, transoms 36 and inside wheel pieces 37 all suitably joined together to form a rigid structure; Supported upon and rigidly connected with the truck frame is a center bearing support 38 (which may be cast integral with the truck frame if a cast steel frame be employed) formed. with a central opening 39 and di agonal legs 40 extending preferably to the side. members 34 and transoms 36. If the supporting member be made separate from the truck frame. the legs 40 are bolted to theside members 31 and transoms 36, so as to reinforce said truck frame and keep the same from getting out of square.

The center hearing. which carries the entire load of. the car and in my truck takes the place of the side bearing arches, truck bolsters. spring planks and elliptical springs of the standard types of six wheel trucks, consists of an upper telescoping member 41 to which the truck center plate 27 is securcrb(obviou ly these parts might be made integral v a lower telescoping member 42 and a plurality of coiled springs 43 interposed between the upper and lower telescoping members. the lower member being sustained from the supporting member it? by means of hangers ll connected to the supporting member -l0 by pivot pins 45 carried in bearings 46 on the supporting member -10 and similar pivot pins 16 which extend through bearings -17 on the lower telescoping member 42. The king pin 48 extends through the bearing plates 26, .27. and preferably also through the telescoping members 41. 42, as shown in Fig. 10. The load on the center bearing is trans mitted through springs 13 and the supporting member 4-D directly to the truck frame. It is transmitted from the truck frame to the axles of the truck by means of the equalizer bars 31 through springs interposed between the eqnalizer bars and the side men bcrs 34 of the frame. Instead of having one spring between each equalizer bar and the truck frame I preferably employ three springs. The central or master spring 49 is stiffer and heavier than the springs 50. 51 on either side of it, and comes into play only with a heavy load or when a considerable shock has to be resisted. The springs 49 and 50 are preferably the same length. the spring 51 being somewhat longer so that it is put under compression before the others. The springs bear at one end on a seating block 52 carried by the equalizer bar and on the other end against a seating block 53 secured to the under side of the corresponding side frame member 34. \Vith a medium load any normal shock is absorbed by the springs 43 of the center bearing and by spring 51 between the frame and the equalizer. With an overload or an abnormal shock springs 49 are compressed.

The truck is preferably provided with elastic side bearings interposed between the ends of the body bolster and the side members of the truck frame, one of thesebearings being shown in detail in Figs. 3, 4 and 5. 54 designates a bearing member bolted to the end of the body bolster, 55 an upper telescoping member on which the bearing member 54 rests, 56 a lower telescoping member secured to the side member 34 of the truck frame and 57 springs interposed between the telescoping 'iembers 55, 56.

It will be seen that in the truck as above described the spaces below the truck frame and between the wheels are practically free of obstructions. whereas in the standard types of six wheel car trucks these spaces are largely filled by the truck bolsters, spring planks and elliptical springs. all of which parts are eliminated in my truck. As a result the brake rigging may be mate riallv simplified and, moreorer. a workman making repairs underneath the car has a great deal more room to Work in. Furthermore, by providing a center bearing having a plurality of springs, and by employing a plurality of springs between each equalizer bar and the truck frame, the breaking of a single spring does not disable the car. Furthermore, these arrangements permit, in effect, two spring systems, one which opcrates when the car is carrying a light or medium load and when the shocks to be absorbed are not violent, and another which comes into play with an overload or with an abnormal shock.

While I have described my invention in certain preferred embodiments, modified,

tions might be devised without departing from the principles of the invention. Therefore I do not wish to be understood as limiting the invention to the precise constructions, arrangements and devices shown and described except so far as it is so limited by the express language of certain oil the claims.

'I claim:

1. In a railway car truck, the combination with a truck frame and a center bearing plate, of a supporting structure having diagonal legs sustained by said truck frame and means carried thereon providing an elastic support for said center bearing plate.

2. In a railway car truck, the combination with a truck frame and a center bearing plate, of a supporting structure having diagonal legs sustained by said truck frame and means carried thereon providing an elastic swinging support for said center bearing plate.

3. In a railway car truck, the combination with a truck frame and a center bearing plate, of a supporting structure sustained on said truck frame and having a central opening telescoping members in said opening, one of which carries the center bearing plate and the other of which is hung from said supporting structure, and springs interposed between said telescoping members.

4. In a railway car truck, the combination with a truck frame and a center bearing plate, of telescoping members, one of which carries the center bearing plate, hangers providing a sweeping support for the other telescoping member, and springs interposed between said telescoping members.

5. In a railway car truck, the combination with a truck frame, of a center bearing support having diagonal legs with the truck frame, and an elastic center bearing sustained on said support.

6. In a railway car truck. the combination with a truck frame, of a center bearing support having diagonal legs with the truck frame, an r-lastic center bearing, and hang ers for sustaining the same on saidsupport.

7. In a railway car truck, the combination with a truck frame, of a center bearing support having diagonal legs with the truck frame, and an elastic center bearing sustained on said support comprising telescoping members and springs interposed between the same.

8. In a railway car truck, the combination with a truck frame, of a center bearin support rigidly connected with the truck rame, an elastic center bearing comprising telescoping members and sprlngs interposed between the same, and hangers for sustaining said center bearing on said support.

9. In a railway car, the combination with a body bolster, its center plate, the truck frame and truck center plate, of telescoping members, hangers sustaining one of said telescoping members on the'truck frame, the other carrying said truck center plate, and springs interposed between said telescoping members.

10. In a railway car, the combination with a body bolster, its center plate. the truck frame and truck center plate, of telescoping members, hangers sustaining one of said telescoping members on the truck frame, the other carryin' said truck center plate, springs interpose between said telescoping members, and a king pin extending through the center plates and telescoping members.

11. In a railway car, the combination with a truck frame, a body bolster and a center bearing for the same, of an elastic oscillating center bearing support provided with legs extendin diagonally with respect to the truck frame nd rigid therewith.

12. In a railway car, the combination with a truck frame and a body bolster, of a center bearing for the body bolster comprising telescoping members and springs interposed betwen the same, and a center bearing support provided with legs extending diagonally with respect to the truck frame and rigid therewith.

13. In a railway car, the combination with a truck frame and body bolster, of a center bearing for the body bolster comprising telescoping members and springs interposed between the same, a center caring support formed with legs extending diagonally with respect to the truck frame and rigid therewith, and hangers sustaining said .center bearing on said support.

1-1. In a railway car, the combination with a truck frame comprising side members and transoms, a body bolster and a center bearing for the same, of a center bearing support provided with legs extending diagonally with respect to the truck frame, each secured to a side member and transom of the truck.

1'5. In a railway car truck,the combination with a truck frame and a center bearing plate, of means sustained by said truck frame providing an elastic support for said center caring plate, equalizer bars, and a plurality of coiled springs interposed between each equalizer bar and the corresponding side member of the truck frame l il which come into play succes ively as the load increases.

L6. In a railway car truck, the combination with :1 truck frame and a center bearing plate, of means sustained by said truck frame providing an elastic support for said center hearing plate, equalizer bars, a main spring. and on each side of the same ausiliary springs interposed between each equal izer liar and the correspontiing side member of said truck frame.

1?. In a railway car truck, the combination with a truck frame and a center bearing plate. of telescoping members one oi? which carries the center bearing plate and the other of which is sustained on said truck frame with capacity Jor oscillation trans \ersely of the car, springs interposed be tween said telescoping members, equalizer bars and springs interposed between the equalizer bars and the truck frame.

18. In a railway car truck. the cumbina tion with a truck frame and a center bearing plate, of telescoping meini-crs one of which carries the center bearing plate and the other of which is sustained on said truck frame, springs interposed between said telercoping members, equalizer bars, and a pin rality of springs interposed between each cipializcr bar and the corresponding sitic member of the truck frame which come into play successively as the load increases.

19. In a railway car truck, the combina tion with a truck irame and a center bearing plate. of telescoping members, one of which carries the center bearing plate. hangers proriding a swinging support for the other telescoping member, springs interposed between said telescoping nieinbcs, equalizer bars, and springs interposed between the equalizer bars and the truck frame.

20. In a railway car truck, the combination with a truck frame and a center bez1ring plate, of telescoping members, one of which carries the center bearing plate, hangers providing a swinging support for the other telescoping member, springs inter posed between said telescoping members. equalizer bars, and a plurality of coilcii springs interposed between each equalizer bar and the corresponding sirie member of the truck frame.

:21. In a raiiway car truck, the combina tion. with a truck frame, of a center bearing support rigidly connected with the trucl; frame; an elastic center bearin sustained on said support with capacity or oscillation transversely of the car, equalizer bar and springs interposed between the cquaiizcr bars and said truck frame.

92. In a railway car truck, the cornhina tion with a truck frame, of a center hearing support rigidly connected with the truck frame, an elastic center bearing sustained on said support, equalizer bars, and a. plurality of coiled springs interposed between each. of said equalizer bars and the corresponih ing siile member of said truck frame which come into play successively as the load in creases. 1

'23. In a railway car track the combination with a truck frame, oi a center bearing support rigidly uinnectcil with the truck frame, an elastic center ljicaring sustained on id support with capacny lor osciliation transversely of the car comprising tclcscopin; members and springs: intci' aaairl between the same, equalizer bars and Flll'il'igfS interposed between sai equalizer bars and said truck frame.

M. in a railway car truck, the combina' tion. with a trnclt frame, iii a center bearing support rigidly connected with the trucl; frame, an cl ic center ring sustained on said support comprising te escoping niema hers ainl springs iutcrpo Al between the 77 same, equalizer bars, illlti a plurality of coiled springs intcrpi ii lfwtWL'L'I each equalizer bar illitl tin: tflli" pin 0 in member of said truck raine a'hirh come into play successively as the load increases.

2:3. In a railway car. the con'iliination with a bully bolster. its center piatc, the trucic 'i'ralzie aini truclt renter platr, of telescoping members, hangci snstainirg one of saiii tclcscoping men on the truck frame other carrying anl that center p springs intraposcii hetwccnsaizi telescnp-fijg members, equalizer bars, and springs inter postal between the equalizer bars iiidi saiii truck frame.

iii. In a railway can the (.Hi'iiiiiliLlti'tirt'iii l a burly lmlstcr, rcnicr plate, the tract: lrainc aiui truck center members hangers 2a a telescoping nu'nibcrs on the im; other carrying sairl. tract: springs interposed iii-taccn said members. a. lting pin eaten-Bing Lilian renter plates and thi t-oping A izer liars, ainl spring inti rp seii ti-st ve! equalizer bars and said tract [raun- '27. In a railway c ir the man if 1 a truck frame anti a boil butter, nl i c r bearing for the boil)! bortcr rump: telescoping members ant k intcrpi to between the same. a whirl him We support provided with lens rxlrlnlixrs; iliag naiiy with respect to the tra t, ,i'iwnu il'flil igiil therewith, equalizer an. and

posccl between the crpialircr truck frame.

a truck franngmil F vi} bearing for the bi. telescoping memb rs i hetween the same, a ccn lst tliliif: llii tor-med with legs extending iiiagni'aailr respect to the truck frame an rigid therewith, hangers sustaining said, center bearing on said support, equalizer bars, and springs interposed between the equalizer bars and said truck frame.

29. In a railway car truck, the combination with a truck frame, of means for supporting the car body directly on said car truck rame, equalizer bars, and a plurality of springs interposed between each equalizer bar and the truck frame which bear directly against the latter and come into play success'ive ly as the load increases.

30. In a railway car truck, the combination with a truck frame, of means for elastically supporting the car body directly on said truck frame, equalizer bars, and a plurality of springs interposed between each equalizer bar and the truck frame which bear directly against the latter and come into play successively as the load increases. 31. In a railway car truck, the combine tion with a truck frame, of means providing an elastic swinging support for the car body directly upon said truck, equalizer bars, and a plurality of springs interpwed between each equalizer bar and the truck frame which bear directly against the latter and come into play successively as the load increases.

32. In a railway car truck, the combination with a. truck frame, of means for suporting the car body directly on said truck rame with capacity for oscillation transversely of the car comprising an elastic center bearing and elastic side bearings consisting in each case of telescoping members and spiral springs interposed between the same, equalizer bars, and springs interposed between the equalizer bars and the truck frame which bear directly against the latter.

ail-11} a railway car truck, the comb1nation with a truck'frame, of a center bearing and side bearings for supporting the car body directly upon said truck frame with capacity for oscillation transversely of the car, each of said bearings comprising telescoping members and springs interposed between said telescoping members, equalizer bars, and springs interposed between the equalizer bars and the truck frame which bear directly against the latter.

34. In a railway car truck, the combina-. tion with a truck frame, of a center bearing for supporting the car body directly upon said truck frame comprising telescoping members, springs interposed between the same and pivoted han ers, said bearings comprising members an springs interposed between the same, said car body having a sliding engagement with the upper telescoping member, equalizer bars, and s rings intcrposed between the equalizer bars and the truck frame which bear directly against the latter.

35. In a railway car, the combination with a truck frame, of a telescoping member fixed to said truck frame, a floatin telescoping member, springs interposed etween said members, and a bearing member on the car body having a slidable engagement with said floating telescoping member.

86. A center bearing for railway trucks comprising a lpwer telescoping member, an upper telescoping member provided with a center bearin plate, springs interposed between said to escoping members, and means for movably sustaining said lower telescoping member on the car truck.

37. In a railwa car, the combination with a truck, a body olster center plate and a truck center plate, of a pair of telescoping members. one of which carries said truck center plate and the other oneof which is movably sustained on the truck, and springs 1innterposed between said telescoping memers.

38. In a truck, the combination with a truck frame, of equalizer bars, and a plurality of springs interposed between each equalizer bar and the truck frame which come into play successively as the load increases.

39. In a truck, the combination with a truck frame, of equalizer bars, and a plurality of springs interposed between each equalizer bar and the truck frame which bear directly against the latter and come into play successively as the load increases.

40. In a truck, the combination with a truck frame, of equalizer barsfand a plurality of coiled springs of different lengths interposed between each equalizen and the truck frame.

41. In a truck, the combination with a truck frame, of equalizer bars, a heavy coiled spring-interposed between each equalizer bar and the truck frame, and a lighter, longer spring interposed between each equalizer bar and said truck frame.

42. In a truck, the combination with a truck frame, of equalizer bars, a heavy coiled sprin interposed between each equalizer bar an the truck frame, and a lighter, longer spring interposed between each equalizer bar and said truck frame, arranged inwardly of the first named spring.

43. In a truck, the combination with a truck frame, of an elastic center bearing interposed between the body of the car and the truck frame, a plurality of equalizer bars, and a plurality of boiled springs of different lengths and degrees of resiliency interposed between each equalizer bar and the truck frame.

44. In a truck, the combination with a truck frame, of an elastic center bearing.interposed between the body of the car and the truck frame, a plurality of equalizer bars, a heavy master spring interposed between each equalizer bar and the truck frame, and a onger, lighter spring interposed between each equalizer bar and the truck frame.

45. In a railway car truck, the combination with a truck frame. of :1 center bearing supporting member provided with diagonal legs rigid with said truck frame and formed with a central opening, of a pair of telescoping members in said opening, spiral springs interposed between said members, hangers for suspending the Lower telescoping member, and a center bearing plate on the upper telescoping member.

GE ()RGE H. GILMAN.

Witnesses WALTER L. CHAPIN, DnNALD A. Dow.

It hereby certifiedthat irr Letters Patent No. 1,128,771, granted February lfi,

1915, upon the application of George H. Gilman, of St. Paul, Minnesbta, for an improvement in Railway-Car Trueks, errers appear in the printed specification requiring r-orrection as follows: Page 3, fine 49, for the word sweeping read swing H 5 same page, Hues M, 59, and 64, after t|lC .W91'.d Iegs" insert the word rigid same gage, line J4. strike out the article 2t and insert the words an elastic 0scil1at- My. u mi lines 95 .16, strike out the words anelaetie oeillatinm" and that the said Lett rs Patent should he read with these corrections therein that the same may eonfurm in the record of the vase in the Patent Office.

Signed and sealed this 16th day of March, A. D., 1915.

J. 'r. NEWTON,

Acting 00mm ission er of Paten ta.

[sue] 

